4. The population of a trading area is currently 100 thousand. At time t years from nowpopulation will be growing at the rate of20(0.5t + 9)7thousand per year.a) What will total population be 11 years from now?b) How long will it take the population to reach 260 thousand?

Answered: Image /qna-images/answer/c8102601-6bcd-4adb-abc4-b9d8026b9820.jpg

Answered: 4. The population of a trading area is…

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

See similar textbooks

Similar questions

The population of a city is growing 6% each year. The population was 100,000 in 2020 a) What will the population be in 2025? (b) How long until the population triples?
8. The half-life of caffeine (how long it takes for the amount of caffeine in your system to cut in half) is about 5 hours. If there is currently 5.7 mg/L of caffeine in your blood, how long until there will only be 2.3 mg/L of caffeine in your blood?
12. On a diet program, a person loses weight at a rate of yt + 4t pounds/month t months after starting. If the person weighs 350 pounds at the start of the program, how much will he weigh after 9 months?
22. The half-life of radium-226 is 1620 years. a) If the current mass of a sample is 100 grams, what wass the mass 200 years ago? b) How long will it take for the sample to be reduced by 75%%
Q1. Assume that the rate at which radioactive nuclei decay is proportional to the number of such nuclei that are present in a given sample. In certain sample 10% of the original number of radioactive nuclei have undergone disintegration in a period of 100 years. a) What percentage of the original radioactive nuclei will remain after 1000 years? b) In how many years will only one-fourth (1/4) of the original number remain?
7. The population, P, of a small community can be modelled by the equation P= 12 000(1.031)', where t is the number of years after 2005. a) What was the population in 2005? b) Is the population increasing or decreasing? Justify your answer. c) In terms of percentage, how is the town's population changing each year? d) What was the population be in 2010? e) In what year will the population reach 16 800?

Recommended textbooks for you

Advanced Engineering Mathematics

Advanced Math

ISBN:

9780470458365

Author:

Erwin Kreyszig

Publisher:

Wiley, John & Sons, Incorporated

Numerical Methods for Engineers

Advanced Math

ISBN:

9780073397924

Author:

Steven C. Chapra Dr., Raymond P. Canale

Publisher:

McGraw-Hill Education

Introductory Mathematics for Engineering Applicat…

Advanced Math

ISBN:

9781118141809

Author:

Nathan Klingbeil

Publisher:

WILEY

Advanced Engineering Mathematics

Advanced Math

ISBN:

9780470458365

Author:

Erwin Kreyszig

Publisher:

Wiley, John & Sons, Incorporated

Numerical Methods for Engineers

Advanced Math

ISBN:

9780073397924

Author:

Steven C. Chapra Dr., Raymond P. Canale

Publisher:

McGraw-Hill Education

Introductory Mathematics for Engineering Applicat…

Advanced Math

ISBN:

9781118141809

Author:

Nathan Klingbeil

Publisher:

WILEY

Mathematics For Machine Technology

Advanced Math

ISBN:

9781337798310

Author:

Peterson, John.

Publisher:

Cengage Learning,

Basic Technical Mathematics

Advanced Math

ISBN:

9780134437705

Author:

Washington

Publisher:

PEARSON

Topology

Advanced Math

ISBN:

9780134689517

Author:

Munkres, James R.

Publisher:

Pearson,

SEE MORE TEXTBOOKS

4. The population of a trading area is currently 100 thousand. At time t years from now population will be growing at the rate of 20 (0.5t + 9)Z thousand per year. a) What will total population be 11 years from now? b) How long will it take the population to reach 260 thousand?